Obs. : 2026-10-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.660e+08
Venus      7.711e+08
Earth      7.148e+08
Mars       7.877e+08
Jupiter    7.904e+08
Saturn     7.148e+08
Uranus     7.639e+08
Neptune    7.148e+08
Pluto      7.205e+08